Portion of a shoe outsole



FIG. 1 is a frontal perspective view of a portion of a shoe outsole showing my new design;

FIG. 2 is a plan view thereof; and,

FIG. 3 is a rear perspective view thereof taken from a viewpoint diagonally opposed to the viewpoint of FIG. 1.

The uneven broken line showing of the remainder of the shoe is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a portion of a shoe outsole, as shown and described. 